Is 12 even or odd?

Is the sum of 3 and 8 even or odd?

Is 55 even or odd?

Which number is not odd?

If we add 1 to an even number, is the sum even or odd?

If we add 1 to an odd number, is the sum even or odd?

Which number is not even?

5 is odd and 9 is odd. Will their sum be even or odd?

6 is even and 8 is even. Will their sum be even or odd?

7 is odd and 4 is even. Will their sum be even or odd?